Question

18. The mass of a body is 50
kg.It is moving with a velocity
of 5 m/s. What is its kinetic
energy?
15625J
650J
625J​

Answer 1

Answer:

1/2×50×5 J

=625 J

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Answer 2

Answer:

Given :-

• The mass of a body is 50 kg and it is moving with a velocity of 5 m/s.

To Find :-

• What is its kinetic energy.

Formula Used :-

To find kinetic energy we know that,

★ K.E = 1/2 × mv² ★

where,

• K.E = Kinetic Energy

Solution :-

Given :

• Mass = 50 kg
• Velocity = 5 m/s

According to the question by using the formula we get,

↦ K.E = 1/2 × 50 × (5)²

↦ K.E = 1/2 × 50 × 25

↦ K.E = 1/2 × 1250

➠ K.E = 625 J

∴ The kinetic energy of a body is 625 J . Hence, the correct options is option no (3) 625 J.